OCULUS Keratograph 5M Topographer · OCULUS Keratograph 5M Topographer The multi-purpose...

OCULUS Keratograph 5MTopographer

OCULUS Keratograph 5MTopographer

The multi-purpose topographer has become an integral part of the ophthalmological and optometric practice.Examiner-independent measurements provide reliable data, clear analyses and full documentation. Clear and easy-to-understand representations facilitate communication with your patients and ensure a time-saving workflow.

“The Keratograph 5M is one of the most versatile instruments that we have in our practice. It is highly valuable and efficient for a very busy and technology-driven eye care practice such as ours.”

Barry Eiden, O.D., USA

“The Keratograph – with easy handling when it comes to performing meibography and excellent quality images really won me over!”

Elisabeth Messmer, M.D.,Germany

“The information that I get from this instrument plays a very important role in the fitting of all forms of rigid gas-permeable contact lenses, as well as, the simple fits of everyday soft lenses.”

Chris Eksteen, DipOptom , South Africa

“In my clinic we use the automated pupillometry of the Keratograph for more accurate diagnosis of mild concussions. The examination takes one minute to complete. One minute for clinicians to reduce neuropsychological problems among athletes.”

Rolando Toyos, M.D., USA

“I use the R-Scan for contact lens fitting and documentation of ocular changes – what a helpful visual consultation tool!“

(FH) Marc Schulze, PhD, Dipl. Eng., Canada

“I use the Keratograph imaging tool to assess the fit of contact lenses without any additional fluorescein!”

Sebastian Marx, Dipl. Eng. ,Germany

Where to find ?

OCULUS Keratograph 5M – The Allrounder

Measurements With Placido Ring IlluminationWhite ring illumination is used to measure thousands of points on the entire corneal surface. Infrared ring illumination is also available for analysing the tear film in order to prevent reflex tear secretion caused by glare.

LED MeasurementsThe Keratograph 5M proudly offers the perfect illumination for each function: White diodes for tear film dynamics, blue diodes for fluorescein images and infrared diodes for meibography.

Precise measurement of the corneal shapeExtensive analyses and graphicsAutomatic keratoconus detection

Course of disease displaysImage and video documentationMeasuring instruments

Selection of contact lensesFluorescein image simulationOxiMap®

Tear film analysisMeibographyClassification of redness

Technical dataNetwork connection abilitySoftware overview

> white illumination > infrared illumination > blue diodes

Topography Documentation Contact Lens Fitting Dry Eye Screening Technology & Software

TopographyQuick, precise and clear

Aside from topography and automatic keratoconus detection, the Keratograph 5M pro-vides a large contact lens data base and many analyses for daily practice. The built-in

keratometer and automatic measurement ensure the utmost accuracy and reproducibility. After completing the measurement, the overview display provides a detailed outline.

Keratometric data, diameter of the cornea and pupil, K-values and index for keratokonus detection, size of the analysed surface

Built-in measuring instrument for measurements in the camera image

3D view can be selected and displayed directly beside the camera image

Display as sagittal or tangential curvature,elevation data or refractive power, overlayof apex position, pupil centre and contour,numerical values and major meridians

Fourier Analysis

The refractive power of the front surface of the cornea consists of different components. The Fourier Analysis identifies four of them which are shown in the following displays:

Spherical componentDecentrationRegular astigmatismIrregularities

Pathological changes can be quantified and possible effects on visual acuity can be explained.

The Keratograph software includes a reliable screening package for corneal disease detection, lens fitting and refractive surgery. The complex corneal surface structure is measured by means of mathematical analyses, which serves as the basis accurate

detection of irregularities like keratoconus. In addition, optical properties of the front surface of the cornea are exactly characterised.

Zernike Analysis

Zernike polynomials are adapted to the elevation dataof the cornea, which is crucial for locating the apex.The apex position is labelled with a cross. This display shows you if a rear surface toric lens is applicable to the particular case. Zernike polynomials and and the aberration coefficient give you important indications of the imaging quality of the corneal surface. Abnormal values are marked in colour.

Keratoconus Detection

Keratoconus classification is based on numerous para-meters. The indices display merges these parameters. The coloured label illustrates abnormal values. Temporal changes of the parameters are shown side by side in a table, to facilitate your follow-ups. The Amsler classifica-tion system is applied to the keratoconus domains.

Detailed Display of the Cornea


Complete DocumentationFollow-ups provide reliability

Follow-ups require comparison of several examinations. In doing so, changes can be easily detected and fully documented. Regular follow-up examinations provide reliability

and increase the trusting relationship between you and your patient. The Keratograph software contains both data and image documenation.

Graphic display of differences between individual examinations. Display as sagittal or tangential curvature, elevation data or refractive power.

Selection of examinationfrom the patient data base

„Course of Disease“ display showingthree examinations

Comparing Examinations

The “comparing three examinations“ display shows changes over a certain period of time, e.g. the progres-sive course of disease of keratoconus. Choose between sagittal and tangential curvature and between elevation data and refractive power.Use the “comparing two examinations” display for a right/left or before/after comparison. The easy-to-under-stand displays help you describe even complex contexts to your patient.

Precise Measurements Instead of Rough Guesses

The Keratograph 5M is the ideal device for your profes-sional documentation. The imaging software includesfeatures such as

magnification functionhand toolmeasuring toolangle measurement

Pathological changes can be exactly localised, and changes in size can be determined. This ensures that all of your patients questions will be answered.

The Keratograph 5M contains features that offer optimal conditions for your image doc-umentation such as the high-resolution colour camera and different illumination options.

An image aids in communication with education of your patients, thus eliminating the need for long explanations. You save time with only one mouse click.

High-Resolution Images

You can evaluate the wettebility of contact lenses, without fluorescein application and determine the exact rotating of toric lenses. It is also possible to detect lipids and deposits on the lens surface, as well as corneal staining or vascularisation. Show your patients images they have never seen before.

Reliable Diagnosis Documentation

The resulting classification from corneal staining requires welltrained examiners. It is difficult to estimate the number of hyper-fluorescent dots on the corneal surface, but the integrated JENVIS grading scale facilitates this evaluation. Every image taken can be compared witha sample image on the screen. Vessel injections canalso be evaluated and documented in this way.

A Picture Is Worth a Thousand Words.


Contact Lens FittingProfessionalism through innovation

An ideal lens is chosen from the large lens data base and is then suggested in the lens fitting display. Based on this topographic data, a simulated fluorescein image of this

particular lens is created. You can then take real fluorescein images with the Keratograph 5M and compare them with the simulated images.

Eccentricity values forboth major meridians

Simulated fluorescein image of a toric RGP lens

Keratometric data,diameter ofthe cornea and pupil,fixation deviation

Distance of major meridians of the cornea from the lens

Selection between RGP and soft lenses

Contact lens suggestion from the large data base

Subjective refraction dataand CVD conversion

Multifocal, Bifocal, Toric

Near-Portion Height Measurement

The near-portion height of RGP bifocal lenses can be simulated and precisely determined with this software, even before ordering the first-fitting lens. This also facilitates the complex fitting of multifocal lenses.

Palpebral Angle Measurement

The imaginable angle of the nasal side of the lower eyelid can be measured to determine the expected nasal rotation when fitting lenses for astigmatism.

Pupillometry

Using the „Pupillometry“ option is a quick and easy way to measure the pupil size of your patients under different illumination conditions. This option not only supports you when fitting multifocal lenses, but also when measuring the optical zone before refractive or cataract surgery.

With the Keratograph 5M you can quickly and precisely measure all of the data needed for multifocal, bifocal and toric contact lenses. These measurements also facilitate the

fitting of mulitfocal or bifocal lenses. Furthermore the Keratograph 5M software can be linked to fitting programs of various contact lens manufacturers.


OxiMap®

Visualising the oxygen transmissibility of soft lenses

An intact tear film and good oxygen supply to the cornea are essential for comfortable lens wear. The OxiMap® displays the oxygen transmissibility of soft lenses in different

colours depending on the optical power and is easy to understand – even for your patients.

Influence of Contact Lens Wearing Time

The oxygen transmissibility is an important quality criterion of soft lenses. It is indicated as Dk/t value, and has a significant influence on the recommended lens wearing time. The higher the Dk/t value, the more oxygen gets through the lens to the cornea. Oxygen transmissibility changes depending on the material and the optical power of the lens.

Only measurements of oxygen transmissibility in the centre of a lens with -3.00 dpt have been demonstrated thus far. For the first time, the OxiMap® integrated in the Keratograph 5M displays Dk/t values over the entire surface depending on the contact lens power. You choose the lens type and the respective power. The OxiMap® is projected onto your patients eye and you can immediately see if the selected lens is suitable for wearing overnight, for example. Explain to your patient the advantages of modern contact lenses.

The recommendations and Dk/t values stated [ ] refer to:

Harvitt & Bonanno et al.: Re-Evaluation of the Oxygen Diffusion Model for Predicting Minimum Contact Lens Dk/t Values Needed to Avoid Corneal Anoxia. Optom. Vis. Sci. 1999; 76:712-719

cm/secmL O2/mL x mm Hg

x 109

Recommended lens wearing time

oxyg

en t

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(Dk/

t va

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wearing contact lenses up to 30 days Dk/t > 125

wearing contact lenses up to 7 days Dk/t > 87

wearing contact lenses up to 8 hours Dk/t > 35

TF-ScanEvaluation of non-invasive tear film break-up time

The non-invasive tear film break-up time (NIKBUT) measures tear film stability. The NIKBUT is automatically measured within seconds, without fluorescein application. Human eyes are not able to perceive infrared illumination. Glare and reflex tear

secretion are therefore avoided during the examination. The TF-Scan visualises the results in an easy and understandable way – for you and your patients.

You can watch the video after the measurement. The break-up areas detected by the software are highlighted accordingly.

The TearMap shows the affected areas: The respectivebreak-up time is graphically illustrated for each segmentin seconds and according to the principle of a traffic light.

The graph shows percent of the examined area that is affected during the measuring period.

Data field showing tear film break-up time(NIKBUT) in seconds and the corresponding classification.

The high-resolution colour camera makes the smallest structures visible. This enables you to measure the tear meniscus height and evaluate the lipid layer, as well as analyse the

tear film dynamics. Not only do you gain very important findings about tear film break-up time, but also those about the quantity and quality of the tear film.

Quantity and Quality of the Tear Film

Tear Meniscus Height

Never has a precise measurement been so easy. You can evaluate the course of the tear meniscus along the eyelid by means of the new infrared illumination and precisely measure the tear meniscus height with the built-in ruler. Different magnification levels facilitate measurement and the resulting value is automatically saved in the patient file.

Evaluation of Lipid Layer

Hyper-evaporative dry eye is easily overlooked when using conventional tests. Thus evaluating the lipid layer of the tear film is even more important. With the Keratograph 5M you can record videos of interference patterns of the lipid layer. Distribution characteristics, morphology and thickness of the lipid film can be continuously evaluated.

Tear Film Dynamics

The tear film contains numerous particles. These can be made visible using a specific light source. These particles are distributed in the tear fluid from bottom to top during each blink. The velocity of these particles provides information on tear film viscosity. You can quickly and easily evaluate the quantity and movement of these tear film particles using the TF-Scan.


Meibo-ScanMeibography of the upper and lower eyelid

The new multi-functional Keratograph 5M easily and efficiently integrates difficult examinations such as meibography. The dysfunction of Meibomian gland‘s is the most

frequent cause of dry eye. Morphological changes in the gland tissue are made visible using the Meibo-Scan.

Easy Operation Through Optimum Working Distance

The Keratograph 5M enables a greater working distance in the examination of the eyelids. This makes it easy to evert the upper and lower eyelid and to asses the Meibomian-gland´s.

Convincing Images for Reliable Evaluation

Different views can be selected for a precise analysis of the Meibomian gland‘s. Even untrained examiners can easily perform this evaluation due to the labelling of the individual examination field and the high-contrast display.

R-ScanAutomatic classification of conjunctival redness

Previously conjunctival redness evaluation has been carried out subjectively, and the results have varied according to the examiner‘s qualification. Now for the first time it is possible to objectively classify bulbar and limbal redness completly and automatically

using the R-Scan. The R-Scan detects vessels in the conjunctiva and evaluates the degree of redness. Automatic classification eliminates the need for time-consuming comparison and provides greater reliability during evaluation.

Bulbar and Limbal Redness

Different display options help to classify the degree of redness. Choose between the camera image, view of fine vessels in the conjunctiva, red-free or contrast-enhanced display options. Bulbar and limbal redness are evaluated in the temporal and nasal areas, and all results are saved automatically.

JENVIS Grading Scale

The degree of redness is based on the JENVIS grading scale. The comparison of your examination results with the actual-scale images of the JENVIS grading scale facilitates the conversation when consulting with your patient. Further information on possible causes of redness, the normal condition as well as practical notes for capturing an image are provided below the actual-scale images.


Optional examination functionsMy

wish list

TF-ScanEvaluation of lipid layer and tear film dynamics, measurement of tear meniscus height andnon-invasive tear film break-up time (NIKBUT)

R-ScanAutomatic classification of bulbar and limbal redness

Meibo-ScanMeibography of upper and lower eyelid

PupillometryExamination of pupillary response using the pupillometer, asymmetry test and manual measuring mode

ImagingImage and video documentation with fluorescein imaging, near-portion height measurement andeyelid angle measurement

All Features at a GlanceCustomise the OCULUS Keratograph 5M to your own requirements!

Software included

Topography

Lens rear surface measurement

Overview Display

Colour maps

4 maps selectable

Camera image

3D view

Fourier Analysis

Zernike Analysis

Indices

Elevation map

Corneal asphericity

Contact lens fitting

Two examination display

Two examination comparison

Three examination comparison

Optional evaluation functions My

wish list

Contact lens packageIncludes Fourier Analysis, Zernike Analysis, Indices and contact lens fitting

OxiMap®

Graphic display of oxygen transmissibility (Dk/t value) of soft lenses


Server (with/without DICOM)

Floating License KeyMore flexibility with the OCULUS license model

Activate Functions Exactly as You Need Them

The choice is yours in how you use the Keratograph 5M and which examination and evaluation functions you desire. You can order additional functions of optional evalua-tion functions, according to your modular design principle. After purchase, licenses for the respective evaluation functions are activated on the OCULUS Floating License Key and are provided in your network. It is possible to call and view previously performed examinations for free on all workstations within the network.

You can decide which additional functions to allocate to each device.

Efficiency Through Networking

The OCULUS patient data management system enables you to merge all OCULUS devices in a local network. It allows you to collaborate with external data management systems (EMR) to optimise your workflows. DICOM interface is not necessary for device connection.

Optional examination function

TF-Scan

R-Scan

Meibo-Scan

Pupillometry

Imaging

Optional evaluation functions

OxiMap®

Contact lens package (for additional workstations)

Consultation

Patient check-in

Examination room 1

Examination room 2

Examination room 3


General InformationPrecision ± 0.1 dpt

Reproducibility ± 0.1 dpt

Number of rings 22

Working distance 78 / 100 mm

Number of evaluated data points 22.000

Camera Digital CCD camera

Illumination source Placido illumination: white diodesPlacido illumination: infrared diodes (880 nm)Imaging illumination: blue diodes (465 nm)Meibography: infrared diodes (840 nm)Tear film dynamics: white diodesPupillometry illumination: infrared diodes (880 nm)

Technical specificationsDimensions (W x D x H) 275 x 320 - 400 x 485 - 512 mm (10.8 x 12.6 - 15.7 x 19.1 - 20.2 in)

Weight 3.2 kg (7.1 lbs) (measuring equipmentl) 6.1 kg (13.5 lbs) (with xy base)

Max. power consumption 25 W

Voltage 90-264 V AC

Frequency 47-63 Hz

Minimum PC requirements Processor: Intel Core i3 or better, 4GB main memory,Hard disk: 500GB and more, graphics card: Intel HD Graphics 2000 or better, recommended screen resolution: 1920 x 1080 (full HD)

Technical DataOCULUS Keratograph 5M

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250 mm9.8 in

275 mm10.8 in

320 – 400 mm12.6 - 15.8 in

OCULUS Optikgeräte GmbHPostfach • 35549 Wetzlar • GERMANY Tel. +49-641-2005-0 • Fax +49-641-2005-295Email: [email protected] • www.oculus.de

• OCULUS USA, [email protected]• OCULUS Asia, [email protected]• OCULUS Czechia, [email protected]• OCULUS Iberia, [email protected]• OCULUS Poland, [email protected]

OCULUS is certified by TÜV according toDIN EN ISO 13485

WWW.OCULUS.DE

in accordance with Medical Device Directive 93/42/EEC

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